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Set PDF import options

 

Before loading a PDF file you need to ensure that the PDF import options are set correctly.

To set the PDF import options, go to File Menu > PDF > Import Options.

 

Color Raster As

Limit Raster Max

Make Vector Arcs

Make Vector Beziers

Make Vector Circles

Make-Dash-Lines

Make Arrow Lines

Load PDF Text

Load Solid White Rectangles

Always Display Vector Colors on Load

 

Color Raster As

When you load a PDF file that contains raster information, Scan2CAD assigns an image format to the raster information. If the raster information in the PDF file is black and white, it will be assigned to TIFF fax group 4 format. If the raster information is grayscale or color, it will either be assigned to BMP format or to JPEG format.

The Color Raster As option allows you to choose between BMP and JPEG.

This does not become important until you save the raster image.

If you save the raster image in BMP format, it will not lose any quality. However because BMP is not a compressed format, it will be relatively large.

If you save the raster image in JPEG format, its quality will be reduced but the size of the saved raster image will be smaller.

 

You can change the raster format of a loaded raster PDF file using File Menu > Raster > Save As.

 

Limit Raster Max

A PDF page may contain many raster images. When you load such a PDF page into Scan2CAD, Scan2CAD consolidates all the raster images into one raster image, selecting a palette and resolution that accommodates all the images.

Limit Raster Max is the maximum DPI resolution that Scan2CAD can use during this process.

 

If the consolidated image is large due to the required color depth and DPI then Scan2CAD may emit a message indicating it is unable to load the consolidated image due to memory constraints. If this happens then try reducing the Limit Raster max. DPI value and reloading the PDF page.

 

Make Vector Arcs

In a vector PDF file, there are no arc entities. Arcs are either made up out of many short lines or out of Bezier curves. If you select Make Vector Arcs, Scan2CAD attempts to replace the short lines or Bezier curves with arcs when it imports the vector PDF file.

 

Make Vector Beziers

In a vector PDF file, curves are either made up out of many short lines or out of Bezier curves. If you select Make Vector Beziers, Scan2CAD attempts to replace curves made up out of short lines with Bezier curves when it imports the vector PDF file. It will retain any Bezier curves that already exist in the file.

 

Make Vector Circles

In a vector PDF file, there are no circle entities. Circles are either made up out of many short lines or out of Bezier curves. If you select Make Vector Circles, Scan2CAD attempts to replace the short lines or Bezier curves with circles when it imports the vector PDF file.

 

Make Dash Lines

Where original dash lines have been broken in the PDF file as separate short lines, this option when set will attempt to rebuild the short lines into a single Dash, Dash-Dot or Dot line. The ‘Dash Limit’ value sets the maximum individual length of a dash line. If you wish to discern Dot lines from Dash lines with very short lines then tick the ‘Discern Dot Lines’ button. The dot size can be entered in the associated ‘Dot Limit’ field.

 

Make Arrow Lines

Where original Arrow lines have been broken in the PDF file as separate  lines, polylines or solids, this option when set will attempt to rebuild the Arrow lines into a single Arrow Line. The associated ‘Angle Limit’ field sets the maximum Angle of the Arrow Head Point.

 

Load PDF Text

Scan2CAD by default will load all vector entities found in the PDF file.

Where text is provided in the PDF file for the purpose of utilising the Adobe Reader ‘Search’ option then it may not be required for loading as part of the vector image.

Un-selecting Load PDF Text will result in no text being loaded from the PDF file.

 

 

 

Load Solid White Rectangles

PDF files may contain display masking rectangles. These rectangles when loaded into Scan2CAD may cause problems when the vector image is exported as a DXF file. If a DXF file is saved with the white to black flag set (CAD Color0 -> Color7) then these masking rectangles will display as a series of unwanted black rectangles.

Un-selecting Load Solid White Rectangles will result in none being loaded from the PDF file.

 

 

Always Display Vector Colors on Load

If you select this option, vectors are always displayed in their actual colors when you load a PDF file into Scan2CAD.

Otherwise, vectors are displayed in their actual colors or according to their vector type, depending on the View Menu > View Vector Colors setting.

 

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